import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class Demo11 {
    public static void main(String[] args) {
        try (InputStream inputStream = new FileInputStream("./text.txt")) {
            byte[] buffer=new byte[1024];
            int n=inputStream.read(buffer);
            for (int i = 0; i < n; i++) {
                System.out.printf("0x%x",buffer[i]);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}
